NXP公司的PCF8534A是多路傳輸?shù)退俾释ㄓ肔CD驅(qū)動器,能驅(qū)動多達4塊背板和多達60段的LCD,并很容易級聯(lián)以驅(qū)動更大LCD顯示屏.工作電壓1.8V到5.5V,雙向I2C總線?400kHz,和大多數(shù)的微處理器或微控制器兼容,不需要外接元件.本文介紹了PCF8534A的主要特性,方框圖,典型系統(tǒng)配置圖以及級聯(lián)PCF8534A系統(tǒng)配置框圖.PCF8534A:UniversalLCDdriverforlowmultiplexratesThePCF8534AisaperipheraldevicewhichinterfacestoalmostanyLCDwithlowmultiplexr
NXP 公司的PCF8534A是多路傳輸?shù)退俾释ㄓ?b>LCD驅(qū)動器,能驅(qū)動多達4塊背板和多達60段的LCD,并很容易級聯(lián)以驅(qū)動更大LCD顯示屏.工作電壓1.8 V 到5.5 V,雙向I2C總線?400 kHz,和大多數(shù)的微處理器或微控制器兼容,不需要外接元件.本文介紹了PCF8534A的主要特性,方框圖,典型系統(tǒng)配置圖以及級聯(lián)PCF8534A系統(tǒng)配置框圖.
PCF8534A: Universal LCD driver for low multiplex rates
The PCF8534A is a peripheral device which interfaces to almost any LCD with low multiplex rates. It generates the drive signals for any static or multiplexed LCD containing up to four backplanes and up to 60 segments. In addition, the PCF8534A can be easily cascaded for larger LCD applications. The PCF8534A is compatible with most microprocessors or microcontrollers and communicates via a two-line bidirectional I2C-
bus. Communication overheads are minimized using display RAM with auto-incremented addressing, hardware subaddressing and display memory switching (static and duplex drive modes).
